WO2005067763A1 - Toothbrush - Google Patents
Toothbrush Download PDFInfo
- Publication number
- WO2005067763A1 WO2005067763A1 PCT/US2005/000259 US2005000259W WO2005067763A1 WO 2005067763 A1 WO2005067763 A1 WO 2005067763A1 US 2005000259 W US2005000259 W US 2005000259W WO 2005067763 A1 WO2005067763 A1 WO 2005067763A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- toothbrush
- cleaning elements
- shaft
- shafts
- cleaning
- Prior art date
Links
Classifications
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B7/00—Bristle carriers arranged in the brush body
- A46B7/06—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement
- A46B7/10—Bristle carriers arranged in the brush body movably during use, i.e. the normal brushing action causing movement as a rotating cylinder
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B13/00—Brushes with driven brush bodies or carriers
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B9/00—Arrangements of the bristles in the brush body
- A46B9/02—Position or arrangement of bristles in relation to surface of the brush body, e.g. inclined, in rows, in groups
- A46B9/04—Arranged like in or for toothbrushes
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/24—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously
- A61C17/26—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like rotating continuously driven by electric motor
-
- A—HUMAN NECESSITIES
- A46—BRUSHWARE
- A46B—BRUSHES
- A46B2200/00—Brushes characterized by their functions, uses or applications
- A46B2200/10—For human or animal care
- A46B2200/1066—Toothbrush for cleaning the teeth or dentures
Definitions
- U.S. Patent No. 6,477,729 discloses a toothbrush wherein the brush head includes a plurality of rotatable brush assemblies mechanically linked together so as to move with the handle. Each rotatable assembly includes a wheel with radially projecting bristles. The bristles are arranged on rotatable wheels in such a manner that the bristles or tufts are positioned at an angle relative to the longitudinal axis of the brush. In a practice of this invention the tufts of bristles are mounted in two parallel rows with the bristles angled as mirror images or each other.
- the shaft extends over a major portion of the length of the head.
- a plurality of cleaning elements is mounted to the shaft and extends outwardly from the shaft.
- the cleaning elements are disposed at an angle which is non-perpendicular to the shaft.
- the shaft and its cleaning elements may, in combination, be in the form of a roller (similar to a snow sweeper) where the cleaning elements extend generally continuously over the major portion of the shaft.
- the cleaning elements could be disposed at any desired angle to the shaft, including being perpendicular.
- the head may be in the form of an open frame which would provide a more hygienic brush since water and residue would not accumulate in the head. If desired a shield may be secured across the frame on its side opposite the cleaning side.
- the shield would have a plurality of openings or in itself would be of generally open form to protect sensitive cheek tissue from being touched by the cleaning elements. In addition, the openness of the shield would still result in the hygienic toothbrush.
- the invention may be practiced where the toothbrush is a manual toothbrush and the shaft is freely rotatable in a set of bearings at each end of the head. The shaft may be permanently or detachably mounted to the bearings.
- the invention may be practiced where the toothbrush is a power toothbrush wherein a drive mechanism in the handle of the toothbrush drives the shaft carrying the cleaning elements.
- the invention may be practiced where there is more than one shaft, such as two parallel shafts.
- the cleaning elements could be mirror images of each other at the same angle or could be at the same angle but in the same direction.
- the cleaning elements on one shaft could be disposed in generally the same direction as on the other shaft but at a different angle or could be disposed in an opposite direction of the cleaning elements on the other shaft, but at a different angle.
- the shaft itself may take various forms such as being a twisted wire or being molded wherein the cleaning elements are soft spikes integral with the core which itself forms the shaft.
- the cleaning elements could be fiber bristles or could be elastomeric elements such as elastomeric cleaning pads.
- Figure 1 is a front elevational view of a toothbrush in accordance with one embodiment of this invention
- Figure 2 is a front elevational view of a portion of a toothbrush in accordance with a further embodiment of this invention
- Figures 3-4 are front elevational views of a portion of a toothbrush in accordance with further practices of this invention
- Figure 5 is a cross-sectional view taken through Figure 1 along the line 5-5
- Figure 6 is a cross-sectional view taken through Figure 2 along the line 6-6-
- Figure 7 is a cross-sectional view taken through Figure 2 along the line 7-7
- Figures 8-9 are cross-sectional views of further variations of this invention
- Figure 10 is an end elevational view of a toothbrush showing a shaft mounted in a bearing
- Figure 11 is a rear elevational view of a further toothbrush in accordance with this invention.
- toothbrush 10 in accordance with this invention.
- toothbrush 10 includes a handle 12 and a cleaning head 14.
- the toothbrush is a power driven toothbrush wherein the handle 12 would include a motor 16 and batteries (not shown).
- Motor 16 has a drive shaft 18 which rotatably drives cleaning shaft 20.
- Cleaning shaft 20 is located at the cleaning side or surface 22 of head 14.
- a plurality of cleaning elements 24 which are illustrated in Figures 1 and 5 as being fiber bristles are secured to shaft 20 over a major portion of the length of head 14.
- the bristles extend at least 1/3 of the length of head 14 and more preferably at least Vi of the length and most preferably at least 2/3 or at least about 90% of the length of head 14.
- Shaft 20 as illustrated in Figure 1 is made from the known twisted wire process to result in a rotatable shaft of, for example, nylon wire.
- a wire is bent upon itself. Bristles are inserted between the bent portions. The wire is then twisted upon itself to lock the bristles in place with the bristles 24 extending outwardly from the shaft 20.
- the density or number of bristles along different portions of shaft 20 may be varied by controlling the number of bristles at any given portion or by controlling the degree of spiraling of the twisted wire. The greater degree of spiraling would tend to pull the bristles closer together.
- the bristles are disposed at an angle between 10-45° in relationship to the wire core shaft 20.
- Shaft 20 is mounted to head 14 by being inserted into bearings 26,28 at each end of head 14.
- the bearings permit the shaft 20 to thereby rotate.
- shaft 20 is freely rotatable in the bearings 26,28.
- toothbrush 10 can be a powered toothbrush wherein shaft 20 would be connected either directly or through gearing to drive shaft 18 so that the rotation of shaft 20 is thereby controlled by drive shaft 18.
- the rotation could be a back and forth oscillation or could be a one-way 360° continuous rotation.
- Figure 1 illustrates brush head 14 to include a single centrally located shaft having a continuous set of bristles creating a generally roller structure.
- the invention may also be practiced where the single shaft is of a cylindrical or other type shape with the bristles being in the form of tufts mounted as individual wheels uniformly spaced from each other uniformly or spaced by some variable distance relationship with respect to each other.
- U.S. Patent No. 6,477,729 discloses a brush in which rotatable wheels of toothbrush bristles or tufts are positioned in a toothbrush head at an angle relative to the longitudinal axis of the brush. Although this may deliver benefits to the user, if the row of wheels were connected to a central shaft (as in accordance with this invention) a continuous string of bristles could be produced providing more complete coverage of tooth surfaces including the gum line and the hard to clean between teeth areas.
- this practice of the invention would provide manufacturing efficiencies. For example, instead of assembling ten wheels into a toothbrush head, two shafts with the equivalent of five wheels each could be assembled. (See Figures 2-4) Such arrangement would have economic benefits.
- the axels of rotatable bristles could be formed in a number of ways.
- Figure 1 illustrates the use of a twisted wire to form the axel or shaft.
- the bristles or tufts could be fastened into a cylindrical core of plastic by either conventional stapling or nonstapling brush manufacturing processes.
- Figure 2 illustrate a practice of the invention wherein the cleaning elements are tufts of bristles formed as parts of individual wheels 30,32.
- the wheels 30,32 are arranged on two parallel shafts 34,36.
- the wheels 30,32 extend over a major length of the head 14.
- Shaft 34 is mounted in bearings 38,40 while shaft 36 is mounted in bearings 42,44. If the toothbrush is a manual toothbrush the shafts 34,36 would freely rotate in the bearings. Where, however, the toothbrush is a power toothbrush, as illustrated in Figure 2, each shaft would be associated with a gear 46,48 which meshes with and is driven by intermediate gear 50. Drive gear 50 is driven by shaft 18. See Figures 2 In accordance with one aspect of this invention the cleaning elements and wheels are mounted on each respective shaft at an angle which is non- perpendicular to the shaft. The exact angular arrangement may vary in accordance with the invention. Figure 2, for example, illustrates the wheels
- FIG. 3 shows the wheels 30,32 to be mirror images of each other inclined at the same angle to their shafts 34,36.
- Figure 4 shows a further variation where the wheels 30 on shaft 32 are inclined at a different angle than the wheels 32 on shaft 36.
- Figure 4 illustrates the wheels 30,32 to be inclined in generally the same direction as in Figure 2.
- the provision of different angles for the wheels 30,32 may also be used where the wheels are generally mirror images of each other as in Figure 3.
- a further variation is to have the cleaning elements on one set of wheels 30 differ in length from the cleaning elements on the other set of wheels 32.
- the wheels of individual sets on the same shaft may have its cleaning elements differ in length from the cleaning elements on other wheels mounted on the same shaft.
- the shaft and cleaning element combination could be made in a number of ways.
- Figure 1 illustrates the twisted wire embodiment.
- the bristles or tufts could be fastened into a cylindrical core of plastic by either conventional stapling or non-stapling brush manufacturing processes.
- standard thermoplastics and thermoplastic elastomers can be used either individually or in combination.
- the shaft could be polypropylene but the bristle extensions might be molded from a thermoplastic elastomer. See Figure 8.
- the invention may be practiced where the wheels 30,32 have outwardly extending cleaning elements such as bristles or elastomeric fingers.
- Figure 4 illustrates a variation where cleaning elements 35 extending directly from the shaft 34 or 36 are located between adjacent wheels 30 or 32. In such cases the wheels 30 and/or 32 can have their own cleaning elements or can function as guides for the cleaning elements 35 without having their own cleaning elements. When functioning as guides wheels 30 and/or 32 could be fairly thin and may even be pointed.
- the wheels and cleaning elements are preferably disposed parallel to each other.
- the shafts or axels of rotatable cleaning elements such as bristles can be fastened into molded bearings, such as bearings 26,28 which could be part of the brush head or brush frame as later described.
- bearings such as bearings 26,28 which could be part of the brush head or brush frame as later described.
- the shafts could be fit directly into a locking mechanism on a permanent drive shaft such that the shafts could be replaced after extended wear of the cleaning elements.
- Figure 10 illustrates a detachable mounting wherein the shaft 52 has a detent 54 which snaps into the bearing 56 so that the shaft is firmly held in place during use but the shaft 52 can be removed and replaced by a different similar shaft having fresh or different types of cleaning elements.
- One aspect of this invention is to form the shaft and cleaning elements as a roller in a manner similar to powered snow sweepers. It is known in current powered toothbrush which utilize vibratory action, ultrasonics and most commonly an oscillatory motion of a bristle head that moves back and forth at fixed degrees of motion around a fixed point in the middle of the brush head. In current toothbrushes the brush head rotates, for example, in one plane 20° in each direction around an axis that would be perpendicular to the brush head or handle. With the embodiment of the invention using a roller, the bristles or other cleaning elements would be movable about a rotating axis that is parallel to the longitudinal axis of the brush head or brush handle.
- FIG. 1 illustrates such a brush wherein the bristles extend continuously along the length of the axis so as to be in more of a roller structure rather than being arranged in discreet spaced segments as on the wheels shown on Figures 2-4.
- These powered brushes could have the rollers make a complete 360° rotation about its axis or an oscillatory motion with any desired degree of rotation.
- the cleaning elements on the roller could be installed at virtually any angle relative to the rotating core of the roller.
- the angle is non-perpendicular to the roller axis, but the angle could also be perpendicular.
- the rollers could be constructed in various manners.
- One example is the twisted wire brush arrangement shown in Figure 1 where the rollers include a shaft that could be directly driven or driven through a gear transmission.
- the rollers could be injection molded thermoplastic or thermoplastic elastomers that have relatively small soft spikes coming from the central core or central shaft as illustrated in Figure 8 which shows three rollers 58,60,62 having soft spikes 64 extending from the central core 66 of each roller.
- the cleaning elements are molded, the cleaning elements could be integral with a wheel or core formed by injection molding.
- the cleaning elements could be spikes extending from a wheel where both the wheel and spikes are made of the same elastomer.
- the wheel could be made of a hard elastomer and the spikes could be made from a different softer elastomer.
- the wheel itself could be the cleaning element without the inclusion of added spikes or other cleaning elements.
- Such wheel may be a flat elastomeric wall which may or may not be pointed or tapered. The walls could be formed to function as massage elements.
- the rollers 68 could have a central shaft 70 in which soft pads of material such as elastomeric pads 72 are attached to the central core or shaft 70 in any number of methods.
- This roller brush 68 would be more like the car wash type.
- Other manners of attaching the cleaning pads 72 could include adhesive, heat staking, riveting, etc.
- the cleaning elements whether in the form of fiber bristles, elastomeric extensions or pads, could be very flexible and thus loosely extending from the shaft rather than extending straight outwardly.
- Such flexible type cleaning elements would be similar to a car wash type.
- the cleaning elements could have some degree of stiffness so as to be shape retaining more along the line of snow sweepers.
- Brushes made in the form of rollers could be a single roller such as Figure
- roller 1 that could have relatively small, thereby increasing maneuverability inside the oral cavity or could be made with multiple rollers.
- a single roller brush may have advantages of requiring less power due to direct drive and fewer energy losses in the transmission that would also allow a smaller powered brush to be made.
- the cleaning elements are in the form of spaced wheels.
- the rollers or wheels or other forms of cleaning elements mounted on shafts could be mounted on a solid type conventional brush head.
- the brush head is made in an open manner by being a frame member 74 having a significant open space
- the brush head 14 is in the form of a generally oval shaped ring extending from the handle 12 wherein the longitudinal ends of the ring provide a surface on which the bearings could be mounted so that the shafts and their cleaning elements could be secured across the open space.
- This provides for a more hygienic brush since water and residue is not allowed to accumulate in the brush head.
- Figures 1-2 show the cleaning elements extending outwardly from the cleaning or front face 22 of the head 14.
- Figures 8 and 11 show the provision of a shield 78 on the rear face of the head 14. The shield could take any suitable form.
- the shield structure should be provided with sufficient openings 80 as shown in Figures 8 and 11 which would permit water and residue to pass through the toothbrush head.
- Figure 11 shows the shield to be in skeletal form having a plurality of cross members 84 extending across the rear surface of the open frame 74 outwardly of shaft 82 having cleaning wheels 86.
- the cleaning elements are mounted on a shaft which is parallel to the longitudinal axis of the brush head but wherein the cleaning elements extend outwardly from their shaft at an angle which is non-perpendicular to the shaft.
- Various types of cleaning elements may be used in accordance with this invention.
- the invention can be practiced with combinations of the same or different cleaning element configurations (such as stapled or in-molded technology bristles, anchor free tufting, etc.) and/or with the same bristle or cleaning element materials (such as nylon bristles, spiral bristles, rubber bristles, etc)
- the bristles could be thin fiber bristles or could also be made of elastomeric materials having various shapes such as flat walls.
- cleaning elements is intended to be used in its broadest sense.
- roller is intended to mean a shaft having a continuous arrangement of cleaning elements extending outwardly from the shaft along the major length of the shaft similar to snow sweepers.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002551704A CA2551704A1 (en) | 2004-01-07 | 2005-01-05 | Toothbrush |
AU2005204652A AU2005204652A1 (en) | 2004-01-07 | 2005-01-05 | Toothbrush |
BRPI0506697-2A BRPI0506697A (en) | 2004-01-07 | 2005-01-05 | Toothbrush |
EP05705062A EP1701635A1 (en) | 2004-01-07 | 2005-01-05 | Toothbrush |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/753,899 | 2004-01-07 | ||
US10/753,899 US20050144745A1 (en) | 2004-01-07 | 2004-01-07 | Toothbrush |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005067763A1 true WO2005067763A1 (en) | 2005-07-28 |
Family
ID=34711787
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/000259 WO2005067763A1 (en) | 2004-01-07 | 2005-01-05 | Toothbrush |
Country Status (10)
Country | Link |
---|---|
US (1) | US20050144745A1 (en) |
EP (1) | EP1701635A1 (en) |
KR (1) | KR20060132881A (en) |
CN (1) | CN1929760A (en) |
AU (1) | AU2005204652A1 (en) |
BR (1) | BRPI0506697A (en) |
CA (1) | CA2551704A1 (en) |
CO (1) | CO5700681A2 (en) |
RU (1) | RU2006128578A (en) |
WO (1) | WO2005067763A1 (en) |
Cited By (1)
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WO2007071031A1 (en) * | 2005-12-22 | 2007-06-28 | 2062745 Ontario Incorporated | Ultrasonic toothbrush with irrigation and vacuum |
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US1351159A (en) | 1917-03-27 | 1920-08-31 | William N Cavileer | Rotary toothbrush |
US1643217A (en) | 1923-06-21 | 1927-09-20 | Lazarus Solomon Andrade | Toothbrush |
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US2691182A (en) | 1951-10-26 | 1954-10-12 | Calvin U Baize | Triple action spiral toothbrush |
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EP1266590A2 (en) * | 2001-06-15 | 2002-12-18 | Andrea Dondi | Modular roller for industrial rotary cylindrical brushes, particularly for outdoor use |
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US3216034A (en) * | 1964-04-14 | 1965-11-09 | Clyde C Johnson | Personal grooming tool |
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US5428855A (en) * | 1994-07-11 | 1995-07-04 | Li; Raui-Long | Rotatable toothbrush |
US5794296A (en) * | 1996-05-16 | 1998-08-18 | Vontechs Limited, Inc. | Electric toothbrush |
-
2004
- 2004-01-07 US US10/753,899 patent/US20050144745A1/en not_active Abandoned
-
2005
- 2005-01-05 RU RU2006128578/12A patent/RU2006128578A/en not_active Application Discontinuation
- 2005-01-05 EP EP05705062A patent/EP1701635A1/en not_active Withdrawn
- 2005-01-05 BR BRPI0506697-2A patent/BRPI0506697A/en not_active Application Discontinuation
- 2005-01-05 KR KR1020067015297A patent/KR20060132881A/en not_active Application Discontinuation
- 2005-01-05 CN CNA2005800073995A patent/CN1929760A/en active Pending
- 2005-01-05 WO PCT/US2005/000259 patent/WO2005067763A1/en active Application Filing
- 2005-01-05 CA CA002551704A patent/CA2551704A1/en not_active Abandoned
- 2005-01-05 AU AU2005204652A patent/AU2005204652A1/en not_active Abandoned
-
2006
- 2006-07-13 CO CO06068307A patent/CO5700681A2/en not_active Application Discontinuation
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DE63528C (en) | C. FELLER in Efslingen | Hand hoisting machine | ||
US1351159A (en) | 1917-03-27 | 1920-08-31 | William N Cavileer | Rotary toothbrush |
US1643217A (en) | 1923-06-21 | 1927-09-20 | Lazarus Solomon Andrade | Toothbrush |
US2123044A (en) * | 1937-03-05 | 1938-07-05 | Hertzberg Patents Inc | Multiple unit brush |
US2691182A (en) | 1951-10-26 | 1954-10-12 | Calvin U Baize | Triple action spiral toothbrush |
FR1147667A (en) | 1956-04-12 | 1957-11-28 | Improvements to rotary toothbrushes | |
DE19805770A1 (en) * | 1997-02-13 | 1998-08-20 | Al Saleh Abdul Aziz Abdullah | Electric toothbrush |
US6389634B1 (en) | 1998-11-24 | 2002-05-21 | Gillette Canada Company | Oral devices |
DE29912009U1 (en) * | 1999-07-09 | 2000-01-05 | Schindler Herbert | Electric toothbrush with rotating and reversing brush |
US6453497B1 (en) | 2000-03-16 | 2002-09-24 | The Gillette Company | Oral care device |
US6477729B1 (en) | 2000-07-18 | 2002-11-12 | Tsafrir Ben-Ari | Toothbrush with longitudinal to lateral motion conversion |
EP1266590A2 (en) * | 2001-06-15 | 2002-12-18 | Andrea Dondi | Modular roller for industrial rotary cylindrical brushes, particularly for outdoor use |
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WO2007071031A1 (en) * | 2005-12-22 | 2007-06-28 | 2062745 Ontario Incorporated | Ultrasonic toothbrush with irrigation and vacuum |
Also Published As
Publication number | Publication date |
---|---|
CO5700681A2 (en) | 2006-11-30 |
AU2005204652A1 (en) | 2005-07-28 |
BRPI0506697A (en) | 2007-05-02 |
CN1929760A (en) | 2007-03-14 |
EP1701635A1 (en) | 2006-09-20 |
KR20060132881A (en) | 2006-12-22 |
CA2551704A1 (en) | 2005-07-28 |
RU2006128578A (en) | 2008-02-27 |
US20050144745A1 (en) | 2005-07-07 |
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